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Popolare Word Problems >

A person invests 9500 dollars in a bank. The bank pays 4.5% interest compounded quarterly. To the nearest tenth of a year, how long must the person leave the money in the bank until it reaches 22100 dollars?

Soluzione

A p erso n in v es t s 9500 d o ll a rs in a bank . T h e bank p a ys 4.5% in t eres t co m p o u n d e d q u a r t er l y . T o t h e n e a res t t e n t h o f a ye a r, h o w l o n g m u s t t h e p erso n l e a v e t h e m o n ey in t h e bank u n t i l i t re a c h es 22100 d o ll a rs ?

Soluzione

Time : 18.87

Fasi della soluzione

Translate the problem into an equation:

22100 = 9500 (1 + \frac{0.045}{4})^{4 t}

Risolvi per

t, 22100 = 9500 (1 + \frac{0.045}{4})^{4 t} : t = 18.87

Time : 18.87

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